---Did you wait for him long? ---No, I hadn’t waited long _______ he appeared.A．_刷题宝

题干

---Did you wait for him long?
---No, I hadn’t waited long _______ he appeared.

A．unless

B．until

C．before

D．since

上一题下一题 0.64难度单项选择更新时间:2010-10-14 05:07:03

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